The first bridge with polymer fibre reinforced concrete riding surface in the Czech Republic

2018 ◽  
Author(s):  
Petr Bily ◽  
Josef Fládr ◽  
Pavel Ryjáček ◽  
Vojtěch Stančík
Keyword(s):  
Czech Republic ◽  
Reinforced Concrete ◽  
Fibre Reinforced Concrete ◽  
Polymer Fibre ◽  
The Czech Republic

Excavation of the Ejpovice Tunnels

2016 ◽  
Vol 249 ◽  
pp. 315-319
Author(s):  
Štefan Ivor ◽  
Martin Staš ◽  
Jiří Schneider
Keyword(s):  
Czech Republic ◽  
Reinforced Concrete ◽  
Tunnel Lining ◽  
Fiber Reinforced Concrete ◽  
Railway Track ◽  
Fiber Reinforced ◽  
The Czech Republic ◽  
The Third ◽  
Tunneling Machine ◽  
Year 2013

In the year 2013 the modernization of a railway track between the cities Rokycany and Plzeň had began. This project, which is part of the third Czech Railway Transit Corridor includes partly reconstruction of the existing track and partly construction of a completely new track. Because of this, in the part between Ejpovice and Plzeň, new structures like bridges, culverts as well as tunnels have to be done. Two tunnel tubes under the hills Homolka and Chlum will be excavated by S-799 Herrenknecht tunneling machine and after its completion they will be the longest railway tunnels in the Czech Republic. The complete length will be 4150 meters. Tunnel lining segments are made of fiber-reinforced concrete.

scholarly journals Steel Fibre Reinforced Concrete for Tunnel Lining – Verification by Extensive Laboratory Testing and Numerical Modelling

10.14311/1823 ◽  
2013 ◽  
Vol 53 (4) ◽  
Author(s):  
Jaroslav Beňo ◽  
Matouš Hilar
Keyword(s):  
Reinforced Concrete ◽  
Steel Fibre ◽  
New Technology ◽  
Small Samples ◽  
Fibre Reinforced Concrete ◽  
Test Results ◽  
The Czech Republic ◽  
Factors Affecting ◽  
Steel Fibre Reinforced Concrete ◽  
Steel Rebars

The use of precast steel fibre reinforced concrete (SFRC) for tunnel segments is a relatively new application of this material. It was first applied in Italy in the 1980s. However, it did not begin to be widely applied until after 2000. The Czech Technical University in Prague (CTU), together with Metrostav, carried out a study to evaluate the use of this new technology for tunnels in the Czech Republic. The first tests were carried out on small samples (beams and cubes) produced from SFRC to find an appropriate type and an appropriate dosage of fibres. The tests were also used to verify other factors affecting the final product (e.g. production technology). Afterwards, SFRC segments were produced and then tested at the Klokner Institute of CTU. Successful test results confirmed that it was possible to use SFRC segments for Czech transport tunnels. Consequently a 15 m-long section of segmental lining generated from SFRC without steel rebars was constructed as part of line A of the Prague metro.

Segmented footbridge made of UHPFRC

2019 ◽  
Author(s):  
Petr Tej ◽  
Jan Mourek ◽  
Marek Blank ◽  
Petr Kněž
Keyword(s):  
Czech Republic ◽  
Reinforced Concrete ◽  
Structural Material ◽  
High Performance ◽  
Fiber Reinforced Concrete ◽  
The Czech Republic ◽  
High Performance Fiber ◽  
The Town ◽  
Double Chamber ◽  
Design And Production

<p>The paper deals with the design and production of a segmented prestressed bridge made of Ultra High Performance Fiber Reinforced Concrete (UHPFRC) The footbridge is installed in the town of Příbor in Czech Republic. The UHPFRC or UHPC material in the Czech Republic gradually finds its way to interesting and unique design applications. The paper presents the design and production of a segmented bridge of the first type in the Czech Republic, designed as a simple beam of 35 meters total length of 36 meters, which is created by the closure of five double-chamber segments 2,5 m wide and 0,8 m height. The UHPFRC class C110 / 130 was chosen as a structural material with a dispersed steel reinforcement developed by Klokner Institute CTU in Prague.</p>

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